L. Lat. At hand; ready for use. Et querens sectam habeat ad manum; and the plaintiff immediately have his suit ready. Fleta, lib. 2, c. 44, § 2. AD MEDIUM FILUM AQUÆ. L. Lat. To the middle thread, or line of the water; to the centre of the stream. An expression frequently used in describing the extent of the rights of the proprietors of land bounded on a river, or stream. Kent's Com. 428, 429, and notes. 2 Smith's Lead. Cas. 98, [147, 148, Am. ed.] Ad filum medium aquæ, ad filum aquæ, usque filum aquæ, usque ad medium filum aquæ, are different forms of this phrase. See Filum aquæ. AD MEDIUM FILUM VIÆ. L. Lat. To the middle line, or thread of the way; to the centre of the road, or street. A